I first installed XP and thought that it was ok, but decided that I didn't need the extra crap and went back to Win2k. However, my scanner wouldn't work right with Win2k (damn cheap HP Scanjet 3300Cse), while WinXP had built-in drivers, so back to WinXP I went. I'm still using WinXP Pro to this day, and am reasonably well pleased with it, except that I'd like to have a somewhat faster machine to run it on. (read: dual athlon mp 2000+ with 3GB of DDR SDRAM and a SCSI RAID level 5 array of three 180GB 10k SCSI disks)